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Tom Bond Regular
Joined: 02 Sep 2009 Posts: 289 Location: Illinois
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Posted: Sun Jan 20, 2013 6:25 pm Post subject: 861 Head Gasket Change part 2 |
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Ok, you were right. I couldn't take it. Had to pull the head tonight. This is my first one so please tell me what you think. In the last 2 pics of the head, all I see is in between the cylinders, it looks like the gasket opened up over the water jacket. There looks like a hole by each one. ??? I'll start cleaning up stuff tomorrow and take a closer look at everything. Anything stand out that I should be looking for?  |
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awhtx Tractor Guru
Joined: 16 Jan 2002 Posts: 5048 Location: Lampasas, TX
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Posted: Sun Jan 20, 2013 7:56 pm Post subject: Re: 861 Head Gasket Change part 2 |
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It looks to me like the gasket is bad between #2 and #3 cylinders and those pistons look cleaner that #1 and #4 so they have been "steam cleaned".
Can you see a path that water could have followed from the water jacket to the cylinders? |
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souNdguy Tractor Guru
Joined: 20 Aug 2002 Posts: 47804
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Posted: Mon Jan 21, 2013 7:06 am Post subject: Re: 861 Head Gasket Change part 2 |
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and #2 looks to have green coolant setting in the jug.. |
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Mike Groom Long Time User
Joined: 07 Mar 2008 Posts: 526
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Posted: Mon Jan 21, 2013 8:56 am Post subject: Re: 861 Head Gasket Change part 2 |
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Looks like a leaky head gasket,you may want to check the head for flatness or have it resurfaced before you put it back on. |
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old Tractor Guru
Joined: 12 Mar 2000 Posts: 50439 Location: Lake of the Ozarks area of MO
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Posted: Mon Jan 21, 2013 10:13 am Post subject: Re: 861 Head Gasket Change part 2 |
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On #1 and #4 piston is that just carbon build up on the tops of them or is that pitting?? If it is pitting I would drop the pan and check the rod bearings to make sure it was not run to long with water in the oil |
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JMOR Tractor Guru
Joined: 13 Aug 2007 Posts: 12671
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Posted: Mon Jan 21, 2013 10:21 am Post subject: Re: 861 Head Gasket Change part 2 |
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looking for coolant path into cylinder. Look at circled area on opposite side of gasket
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Tom Bond Regular
Joined: 02 Sep 2009 Posts: 289 Location: Illinois
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Posted: Mon Jan 21, 2013 10:24 am Post subject: Re: 861 Head Gasket Change part 2 |
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| old wrote: | | (quoted from post at 19:13:02 01/21/13) On #1 and #4 piston is that just carbon build up on the tops of them or is that pitting?? If it is pitting I would drop the pan and check the rod bearings to make sure it was not run to long with water in the oil |
It's carbon buildup. The cylinders/head look worse than they are. I put in a couple tablespoons oil in each one for my wet compression test. The coolant in the bolt holes and #2 was me. It spilled in there when I broke the head loose. Cleaning starts tonight. |
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old Tractor Guru
Joined: 12 Mar 2000 Posts: 50439 Location: Lake of the Ozarks area of MO
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Posted: Mon Jan 21, 2013 10:48 am Post subject: Re: 861 Head Gasket Change part 2 |
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The coolant problem is why you should drain the radiator and also pull the block drain so that is not a problem. Yep learned that one the hard way decades ago my self. I do think if you have a place that would not charge and arm and leg have the head magnifluxed to make sure it has no cracks |
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Tom Bond Regular
Joined: 02 Sep 2009 Posts: 289 Location: Illinois
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Posted: Mon Jan 21, 2013 5:35 pm Post subject: Re: 861 Head Gasket Change part 2 |
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Started getting things cleaned up tonight. How agressive can I get with sandpaper to clean up the gasket surfaces on the head and block a little better or should this suffice? I ran a file across it to knock down any burrs and put a straight edge across the head. Couldn't even see daylight anywhere. Looks pretty straight. Local shop wants $240 to magniflux and surface the head if they think it needs it. I think I'm just going to try the head gasket and see what happens. If the oil turns milky again, I've only sacrificed $45 for a gasket and my time instead of $240 for something I might not need. I'll take the gamble. Oh Oh...I gambled on the Bears too. Hope the outcome is better with this. Does anyone know if the seal for the oil inlet line on the rocker arm support comes with the normal head gasket sets? Can't really tell in any pics and was going to order the set online tonight.  |
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RBnSC Tractor Expert
Joined: 29 Oct 2008 Posts: 1586
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Posted: Tue Jan 22, 2013 4:51 am Post subject: Re: 861 Head Gasket Change part 2 |
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BTDT Be sure the head bolt holes and bolts are clean before you put it back together. Good luck.
Ron |
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Will Gumbert Regular
Joined: 12 Mar 2012 Posts: 187 Location: Garrett County, MD
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Posted: Tue Jan 22, 2013 8:00 am Post subject: Re: 861 Head Gasket Change part 2 |
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Tom- I would recommend you consider getting a FelPro gasket set, if you're not already. They are good quality and their kits usually come with all you need, but maybe someone else here can confirm that for this application.
Personally, I have had the best luck with their gaskets. -Will |
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GT65 Regular
Joined: 31 Aug 2011 Posts: 326
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Posted: Tue Jan 22, 2013 2:09 pm Post subject: Re: 861 Head Gasket Change part 2 |
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Aren't those HD digital cameras nice. Boy it does look like a crack, but if you hold the control key(all the way low and left on the keyboard)down while pushing the + key(upper right next to the "backspace"key) you can Zoom right down on it and then it doesn't look like a crack.
GT65 |
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GT65 Regular
Joined: 31 Aug 2011 Posts: 326
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Posted: Tue Jan 22, 2013 2:40 pm Post subject: Re: 861 Head Gasket Change part 2 |
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My apologies JMOR, you didn't say anything about a crack, just a coolant path to the cylinder. I read the post wrong at first.
GT65 |
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Tom Bond Regular
Joined: 02 Sep 2009 Posts: 289 Location: Illinois
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Posted: Tue Jan 22, 2013 2:45 pm Post subject: Re: 861 Head Gasket Change part 2 |
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The Felpro head gasket set I'm looking at is # HS7761B2. They have it at NAPA. Has to be shipped in. Just want to make sure it's the correct one and includes the oil inlet line seal. Picture looks like it has it in there. Anyone ever order this set? Doesn't say bolt size but 7/16" or 1/2", is it that big a deal? That would be 1/32" bigger all the way around the hole if it's the 1/2", not the 7/16" I have. |
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showcrop Tractor Guru
Joined: 13 Dec 2000 Posts: 7308
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Posted: Tue Jan 22, 2013 3:24 pm Post subject: Re: 861 Head Gasket Change part 2 |
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I would be taking it to a shop and get it surfaced and checked for straightness. It costs way less than magnafluxing and can reveal problems that would otherwise result in a failure in a short time. |
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